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Analog Devices Inc. LTC2415-1IGN#PBF
- Part No.:
- LTC2415-1IGN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2415-1IGN#PBF.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:132
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Product details
Overview
LTC2415-1IGN#PBF from Analog Devices (formerly Linear Technology) is a micropower 24-bit delta-sigma analog-to-digital converter with differential input and reference, single-cycle settling, 87dB simultaneous 50Hz/60Hz normal-mode rejection, 2ppm INL, and 0.23ppm RMS noise. It operates from 2.7V to 5.5V and targets high-precision industrial sensor digitization in weight scales, strain gage transducers, and gas analyzers.
For engineers reviewing the LTC2415-1IGN#PBF datasheet, LTC2415-1IGN#PBF pinout, LTC2415-1IGN#PBF application, or LTC2415-1IGN#PBF equivalent, key selection criteria include its guaranteed 87dB 49Hz–61.2Hz notch performance, GND-to-VCC common-mode input/reference flexibility, internal oscillator (no external components), 16-pin SSOP package, and SPI/MICROWIRE-compatible 3-wire interface.
Technical Context
The LTC2415-1IGN#PBF implements a decimating FIR-based delta-sigma modulator with auto-calibration, enabling true no-latency conversion output-each 32-bit result corresponds precisely to the immediately completed conversion cycle. Its digital filter is optimized for simultaneous 50Hz and 60Hz line-frequency rejection over 49Hz–61.2Hz without external clocking.
Configuration is hardware-driven: FO pin grounded enables internal oscillator mode with dual-line rejection; external clock on FO allows user-defined notch at fEOSC/2560. Reference and input common-mode voltages are independently configurable across GND to VCC, supporting remote sensing and ratiometric bridge measurements with >140dB DC common-mode rejection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit with no missing codes-guarantees monotonicity and full dynamic range utilization in precision measurement. |
| INL | 2 ppm of VREF-enables sub-10ppm total unadjusted error in 6½-digit DVM and industrial process control applications. |
| RMS Noise | 0.23 ppm of VREF (≈1.1 µVRMS at 5V ref)-supports 22-bit effective resolution in low-drift, low-noise instrumentation. |
| Normal-Mode Rejection | 87 dB over 49–61.2 Hz-rejects both 50Hz and 60Hz interference simultaneously without software tuning or external filtering. |
| Supply Current | 200 µA in conversion mode, 20 µA in sleep-enables battery-powered portable sensors and long-life IoT edge nodes. |
| Input Range | ±0.5 × VREF differential, with VINCM and VREFCM independently set from GND to VCC-allows direct connection to Wheatstone bridges and isolated amplifiers. |
| Interface | 3-wire SPI/MICROWIRE-compatible-requires only CS, SDO, and SCK; supports internal or external clocking with no configuration registers. |
Pinout & Package
Package: 16-lead plastic SSOP (GN), 5.3mm × 6.2mm, SO-8 footprint compatible. Pin 1 is top-left corner (dot-marked), with pins 1, 7, 8, 9, 10, 15, 16 internally connected to GND-each must be soldered to ground plane for optimal noise immunity and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (1,7,8,9,10,15,16) | Ground reference and return path | Seven dedicated ground pins minimize ground bounce and enable robust decoupling; all must be connected to PCB ground plane. |
| VCC (2) | Positive supply input | 2.7V–5.5V operation; requires local 10µF tantalum + 0.1µF ceramic bypass to GND (Pin 1) for stable conversion performance. |
| REF+ / REF– (3,4) | Differential reference voltage inputs | Accept 0.1V–VCC differential reference; common-mode voltage independently adjustable from GND to VCC for ratiometric sensing. |
| IN+ / IN– (5,6) | Differential analog input terminals | Support ±0.5×VREF full-scale range; input common-mode voltage independently set from GND–0.3V to VCC+0.3V. |
| FO (14) | Frequency control select | Ground = internal oscillator with simultaneous 50/60Hz rejection; VCC or external clock = alternate notch frequency configuration. |
| CS (11) | Active-low chip select | Wakes ADC from sleep (20 µA) into conversion mode; initiates data output; HIGH maintains low-power state indefinitely. |
| SDO (12) | 3-state serial data output | Outputs 32-bit conversion result MSB-first; high-Z when CS = HIGH; also serves as conversion status indicator during sleep. |
| SCK (13) | Bidirectional serial clock | Auto-configures as output (internal clock mode) or input (external clock mode) based on power-up or CS falling edge logic level. |
Key Features
| Feature | Design Value |
|---|---|
| No-latency conversion output | Each 32-bit result maps directly to one completed conversion cycle-enables deterministic multiplexed sensor sampling without pipeline delay or data alignment overhead. |
| Simultaneous 50Hz/60Hz rejection | 87 dB minimum rejection across 49–61.2 Hz-eliminates need for region-specific firmware variants or external notch filters in global instrumentation designs. |
| Internal oscillator, no external components | On-chip oscillator removes crystals, capacitors, and layout sensitivity-reduces BOM count, board area, and calibration complexity for cost-sensitive embedded systems. |
| GND-to-VCC independent common-mode range | VINCM and VREFCM each adjustable across full supply rail-supports direct interfacing with op-amp buffers, isolated signal conditioners, and ungrounded bridge sensors. |
| Single-supply 2.7V–5.5V operation | Operates from single Li-ion cell (3.0V nominal) up to industrial 5V rails-enables unified design across portable, automotive, and factory-floor applications. |
Applications
| Weight Scales | Strain Gage Transducers |
|---|---|
Use Scenario: High-resolution load cell readout in platform scales and industrial weighing systems requiring NTEP/EC type approval. IC Role / Device Role / Timing Role: Direct digitizer of mV-level bridge outputs with integrated reference and programmable line-frequency rejection. Use Value: 24-bit resolution and 2ppm INL support ≤0.001% full-scale accuracy; simultaneous 50/60Hz rejection ensures compliance in global deployments without hardware changes. | Use Scenario: Static and quasi-static force measurement in structural health monitoring and materials testing equipment. IC Role / Device Role / Timing Role: Precision ADC capturing low-drift, low-noise differential signals from 350Ω–10kΩ Wheatstone bridges. Use Value: 0.23ppm RMS noise and >140dB DC common-mode rejection preserve microstrain-level resolution; GND-to-VCC VINCM allows direct connection to instrumentation amplifiers. |
| Gas Analyzers | Industrial Process Control |
Use Scenario: Electrochemical and NDIR sensor signal conditioning in portable and fixed-location environmental monitors. IC Role / Device Role / Timing Role: Low-power, high-accuracy ADC for analog front-end digitization of low-bandwidth gas concentration signals. Use Value: 200µA conversion current and auto-sleep mode extend battery life; 87dB line rejection prevents false alarms from AC-coupled EMI in field installations. | Use Scenario: Analog input module in PLCs and distributed I/O systems measuring temperature, pressure, and flow via 4–20mA or mV sensors. IC Role / Device Role / Timing Role: Isolated or non-isolated channel ADC with flexible reference and common-mode handling for multi-sensor aggregation. Use Value: Independent VREFCM/VINCM configuration simplifies interface to diverse sensor types; SPI compatibility enables seamless integration with ARM Cortex-M microcontrollers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1256IDBT | 24-bit, 30kSPS, external crystal required, 100dB 50/60Hz rejection, 5.5mW typical power | Higher speed but higher power; requires external clock and more complex layout; no simultaneous dual-line rejection in single configuration | Select for higher throughput (>15Hz) or when external crystal is already present; not drop-in due to different pinout and timing requirements. |
| LTC2440CGN#PBF | 24-bit, 128Hz output rate, 120dB 50/60Hz rejection, 1.2mA supply current, 20-lead SSOP | Higher rejection and speed but 6× higher power; larger package; no FO pin for hardware-selectable notch modes | Select when ultimate line rejection (>110dB) is critical and power budget allows; not pin-compatible-requires PCB redesign. |
Compared with ADS1256IDBT and LTC2440CGN#PBF, the LTC2415-1IGN#PBF delivers unique value in ultra-low-power, hardware-configurable dual-line rejection applications where board space, BOM simplicity, and deterministic latency are prioritized over raw speed or maximum rejection depth.
Availability
LTC2415-1IGN#PBF is available at Aetrix Electronics and suitable for weight scales, strain gage transducers, and gas analyzers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LTC2415-1IGN#PBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2415/LTC2415-1 product line was designed for ultra-precise, low-power sensor digitization in harsh environments-emphasizing ease of use, hardware configurability, and guaranteed line-frequency rejection without software intervention.
FAQ
What is the guaranteed 50Hz/60Hz rejection specification for LTC2415-1IGN#PBF?
The LTC2415-1IGN#PBF guarantees ≥87dB normal-mode rejection across 49Hz to 61.2Hz when the FO pin is grounded, enabling simultaneous suppression of both 50Hz and 60Hz interference without external clocking or firmware reconfiguration. This is measured under specified conditions: VCC = 2.7–5.5V, REF+ = 2.5V, REF– = GND, and IN+ = IN– = GND.
Does LTC2415-1IGN#PBF require an external crystal or oscillator?
No, the LTC2415-1IGN#PBF integrates a precision internal oscillator and requires no external frequency-setting components. When FO is grounded, it automatically configures for simultaneous 50Hz/60Hz rejection. An external clock may be applied to FO only if a custom notch frequency (fEOSC/2560) is needed-this is optional, not required.
What is the absolute maximum input voltage range for IN+ and IN– on LTC2415-1IGN#PBF?
The absolute maximum voltage for IN+ and IN– pins on the LTC2415-1IGN#PBF is GND – 0.3V to VCC + 0.3V. Within this range, the usable differential input span is strictly –0.5 × VREF to +0.5 × VREF. Exceeding the absolute max ratings risks permanent damage, per Absolute Maximum Ratings table in the datasheet.
How does the LTC2415-1IGN#PBF handle power supply rejection at line frequencies?
The LTC2415-1IGN#PBF provides ≥120dB power supply rejection at both 50Hz and 60Hz ±2%, measured with REF+ = 2.5V, REF– = GND, and IN+ = IN– = GND. This high PSRR ensures stable conversion accuracy even when powered from noisy switch-mode supplies or shared industrial rails.
Can LTC2415-1IGN#PBF interface directly with a 3.3V microcontroller SPI port?
Yes, the LTC2415-1IGN#PBF supports 3.3V operation (VCC = 2.7–5.5V) and its digital interface is SPI/MICROWIRE-compatible. SDO output high level is VCC – 0.5V (≥2.8V at 3.3V), and input thresholds meet 3.3V logic levels-no level-shifting is required when interfacing with standard 3.3V MCUs.
LTC2415-1IGN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- microPOWER™
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 13.75
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2415-1IGN#PBF FAQ
1.How can I place an order for LTC2415-1IGN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2415-1IGN#PBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC2415-1IGN#PBF reliable?
The price and inventory of LTC2415-1IGN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2415-1IGN#PBF is usually 5 days.
3.What payment methods are accepted for LTC2415-1IGN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2415-1IGN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2415-1IGN#PBF?
LTC2415-1IGN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2415-1IGN#PBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC2415-1IGN#PBF?
For technical support, including LTC2415-1IGN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2415-1IGN#PBF requirements.
6.How does Aetrix verify that LTC2415-1IGN#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2415-1IGN#PBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC2415-1IGN#PBF meets industry standards.
7.What is the process for return or replacement of LTC2415-1IGN#PBF?
All LTC2415-1IGN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2415-1IGN#PBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC2415-1IGN#PBF part is unused and in its original packaging.
Return procedure for LTC2415-1IGN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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